The top part is actually incredibly smooth. The bottom part I'm working out some issues with how it printed, it's a draft version, I tried an experiment printing it upside down without support and I got some weird sagging, part of why I'm not sharing the STL yet. And I'm using PETG for strength and heat resistance, it won't print details and be as smooth as printing in PLA. It's all tradeoffs for what you want. The Pershing 1A parts are really smooth, a shot of primer and a light sanding and you see nothing. I've noticed photos of course show every little bobble, nook and cranny with the glossy plastic finish before painting.

__________________
Tim

"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

I am SAM # 0167
NAR 98303 Southwestern Ohio Rocketry Association (SORA) #624
https://www.rocketryohio.com